The "sum" is the result of adding something together, and "digits" refers to the individual
numbers that make up 742.
742 has 3 digits. The digits in 742 are 7, 4, and 2.
When you are asking for the sum of the digits of 742, you are basically asking what is
7 plus 4 plus 2?
Therefore, the sum of the digits in 742 is as follows:
7 + 4 + 2 = 13
Sum of digits in 743
See if you can calculate the sum of the digits in the next number on our list before you go here.
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